عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Vermicompost is a type of organic fertilizer that contains the necessery nutrients for plant growth. In order to investigate the effect of vermicompost on morphophysiological traist of basil (Ocimum basilicum L.), an experiment was conducted as factorial arrangement based on a completely randomized design with three replications under greenhouse conditions, in 2012. Treatments included two ecotypes of basil(green and purple) and five vermicompost levels (0, 20%, 40%, 60%, and 80% vermicompost volumetric). The results showed that there was significant difference in the studied traits (p<0.01): increasing vermicompost persentage to 80% increased the SPAD number by 34% , and the leaf area became seven times larger compared to the control treatment. The effects of ecotypes were significant (p<0.01) in total wet and dry weights, leaf number, and photosynthesis. The interaction between vermicompost and ecotypes was significantly different in length of inflorescence, length of branches, photosynthesis and stomata conductivity (gs). According to the results, the maximum length of inflorescence and length of branches were obtained in the green basil and 80% vermicompost, corresponding to 8.7 and 32 cm, respectively. The overall results indicated that the response of growth characteristics and yield of basil plant was significantly affected by the vermicompost application, such that with increase in vermicompost application, growth indices and yield also increased. Based on the results, it is recommendedthat by considering soil condition, water quality, soil analysis results, type of crop, and plant nutrition conditions, about 4 to 8 kg vermicompost per square meter be used every two to three years.